Oil burner



Nov. 2 1926.

W. L. BAKER OIL BURNER F'led NOV. 25, 1925 'wwzfwtoz Patented Nov. 2,1926.

UNITED STATES 1,604,955 `PATENT OFFICE.l

WILLIAM L. BAKER, OF NEW ORLEANS, LOUISIANA.

ou. minivan.

Application led November 23, 1925. Serial No. 70,948.

The invention relates to improvements in burners in which fuel and airor possibly fuel and steam are atomized and mixed for thoroughcombustion, the fuel being preferably heavy oil.

In connection with burners of the type set forth, particularly thosewhich operate on the mechanically atomizing principle of mixing oil andair, dilculty is encountered in producing a structure which willthoroughly atomize the oil and so mix it with the air as to form ahomogeneous readily combustible mixture. It is the primary object of myinvention therefore, to provide a new and improved structure whereinsuch diculties as those previously encountered, are effectivelyovercome, the construction being such that the mixed fuel and air aredischarged to form a hollow cone of the mixture, with the Well-knownadvantages.

A further object of the invention is to provide an atomizing structureincluding a rotatable spinner at the burner tip, which is lubricatedeffectively by the fuel oil, the

f' construction being also of a nature to keep the burner tip clean,insuring discharge of even the heaviest particles of the fuel.

A still further aim is to provide a burner which is of simple andinexpensive construction, yet will be highly efficient.

With the foregoing in view, the invention resides in the novel subjectmatter hereinafter fully described and claimed, the description beingsupplemented by the accompanying drawing.

Fig. 1 is a vertical longitudinal sectional view partly in elevation,showing the application of my improvements to a burner of the generaltype disclosed in my United States Patent No. 1,524,964 of February 3.,1925.

Fig. 2 is an enlarged longitudinal sectional view through theconstruction at the tip of the burner. 1

co-axially related therewith is a fuel conducting tube 3 of considerablysmaller diameter than the outer tube. This tube 3, in

the present showing, is mounted and receives oil under pressure insubstantially the same manner as in the aforementioned patent. To retainthe front end of the tube centered within the tube 1 however, aplurality of screws 4f or equivalent means, may be employed.

The delivery end of the tube 3 is disposed substantially at the deliveryend 2 of the tube 1 and is formed with an internally beveled valve seat5. This seat co-operates with a beveled valve 6 carried by the front endof an adjustable'and operating stem 7 which is mounted and controlled inthe same manner as in the patent previously mentioned. By properlymanipulating the stem 7, the

' valve 6 may either be closed or may be opened to any desired extent,and when so opened, it delivers the fuel obliquely to the axis of theburner and in the form of a spray.

A sleeve 8 is rotatably mounted co-axially with the tubes 1 and 3, bothends of said sleeve being open. The inner end of the sleeve ispositioned to receive fuel discharged between the seat 5 and the valve6, the ar rangement being such that this fuel will be directed obliquelyagainst the inner side of said sleeve. Preferably, the inner end of thesleeve 8 surrounds the'delivery end of the tube 3 and a suilicient space9 exists between them, to allow a quantity of air from the tube 1, toenter the sleeve. This sleeve is rotatably lmounted and provision ismade for rapidly spinning it, and said tube referably increases indiameter from its inner toward its outer end. By this formation,particles of oil which might otherwise cling to the interior of thesleeve, are acted upon by centrifugal force and are caused to traveltoward the large end of the sleeve, for discharge with the other fuel.

In the preferred formation, -a plurality of pitched webs 10 are providedon the inner side of the sleeve 8, said webs radiating from a hub 11which is rotatably mounted on the valve 6, a shouldered screw 12 beingpreferably employed for so mounting said hub. Additional, pitched webs13 are shown projecting outwardly from the sleeve 8 and terminatingslight distances from the inner side of the tube 1, at the delivery end2 of said tube. The air under pressure striking the webs 13 effectsrotation of the sleeve 8, so that the webs 10 will eectively atomize theoil and thoroughly mix it with the air entering through the space 9, andit will be understood that the oil under pressure, striking said webs10, also assists in rotating the sleeve.

The invention has been constructed and used with exceptionally goodresults, and even when consuming very heavy grades of fuel oil, such oilis thoroughly atomized and mixed with the air under pressure enteringthrough the space 9, the homogeneous mixture of air and fuel vapor beingdischarged in the form of a hollow cone. This mass of fuel is of courserapidly rotated due to the spinning action of the burner tip. rllhe sameis true of the air which discharges between the sleeve 8 and the tube 1,the result being that all of the violently whirling air and fuel vaporis most thoroughly intermingled, so as to produce a highly combustiblemixture and consequently an exceptionally hot llame.

On account of the excellent results obtainable from the detailsdisclosed, they are by preference followed. However, within the scope ofthe invention as claimed, various modicationsmay be made.

l claim:

1. An oil burner comprising a tube for conducting oil under pressure,said tube having an internally beveled delivery end, a beveled valvecooperable with said end, and means for moving said valve toward andfrom said end; a hub at the outer side of said valve and rotatablymounted on the latter, pitched webs radiatinar from said hub, and asleeve surrounding an secured to said webs, said sleeve having openends,one of which is disposed arouhd said valve.

2. An oil burner comprising a tube for conducting oil under pressure,said tube having an internally beveled delivery end, a beveled valvecooperable with .said end, and means for moving said valve toward andfrom said end; a hub at the outer side of said valve and rotatablymounted on the latter, pitched webs radiating from said hub, a sleevesurrounding and secured to said webs, said sleeve having open ends, oneof which is disposed around said valve, additional webs radiating fromsaid sleeve, and means for directing fluid under pressure against saidadditional webs.

In testimony whereof I have hereunto affixed my signature.

WLLIAM L. BAKER.

